6309017f05
Remove duplicated #include('s) in drivers/staging/wlags49_h2/wl_pci.c Signed-off-by: Huang Weiyi <weiyi.huang@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
1581 lines
52 KiB
C
1581 lines
52 KiB
C
/*******************************************************************************
|
|
* Agere Systems Inc.
|
|
* Wireless device driver for Linux (wlags49).
|
|
*
|
|
* Copyright (c) 1998-2003 Agere Systems Inc.
|
|
* All rights reserved.
|
|
* http://www.agere.com
|
|
*
|
|
* Initially developed by TriplePoint, Inc.
|
|
* http://www.triplepoint.com
|
|
*
|
|
*------------------------------------------------------------------------------
|
|
*
|
|
* This file contains processing and initialization specific to PCI/miniPCI
|
|
* devices.
|
|
*
|
|
*------------------------------------------------------------------------------
|
|
*
|
|
* SOFTWARE LICENSE
|
|
*
|
|
* This software is provided subject to the following terms and conditions,
|
|
* which you should read carefully before using the software. Using this
|
|
* software indicates your acceptance of these terms and conditions. If you do
|
|
* not agree with these terms and conditions, do not use the software.
|
|
*
|
|
* Copyright © 2003 Agere Systems Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source or binary forms, with or without
|
|
* modifications, are permitted provided that the following conditions are met:
|
|
*
|
|
* . Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following Disclaimer as comments in the code as
|
|
* well as in the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* . Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following Disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* . Neither the name of Agere Systems Inc. nor the names of the contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* Disclaimer
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
|
* INCLUDING, BUT NOT LIMITED TO, INFRINGEMENT AND THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ANY
|
|
* USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE IS SOLELY AT THE USERS OWN
|
|
* RISK. IN NO EVENT SHALL AGERE SYSTEMS INC. OR CONTRIBUTORS BE LIABLE FOR ANY
|
|
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
|
|
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
|
|
* ON ANY THEORY OF LIABILITY, INCLUDING, BUT NOT LIMITED TO, CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
|
|
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
|
|
* DAMAGE.
|
|
*
|
|
******************************************************************************/
|
|
|
|
/*******************************************************************************
|
|
* include files
|
|
******************************************************************************/
|
|
#include <wireless/wl_version.h>
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/errno.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/init.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/ptrace.h>
|
|
#include <linux/slab.h>
|
|
#include <linux/ctype.h>
|
|
#include <linux/string.h>
|
|
//#include <linux/timer.h>
|
|
#include <linux/interrupt.h>
|
|
#include <linux/in.h>
|
|
#include <linux/delay.h>
|
|
#include <asm/system.h>
|
|
#include <asm/io.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/bitops.h>
|
|
#include <asm/uaccess.h>
|
|
|
|
#include <linux/ethtool.h>
|
|
#include <linux/netdevice.h>
|
|
#include <linux/etherdevice.h>
|
|
#include <linux/skbuff.h>
|
|
#include <linux/if_arp.h>
|
|
#include <linux/ioport.h>
|
|
|
|
#include <hcf/debug.h>
|
|
|
|
#include <hcf.h>
|
|
#include <dhf.h>
|
|
#include <hcfdef.h>
|
|
|
|
#include <wireless/wl_if.h>
|
|
#include <wireless/wl_internal.h>
|
|
#include <wireless/wl_util.h>
|
|
#include <wireless/wl_main.h>
|
|
#include <wireless/wl_netdev.h>
|
|
#include <wireless/wl_pci.h>
|
|
|
|
|
|
/*******************************************************************************
|
|
* global variables
|
|
******************************************************************************/
|
|
#if DBG
|
|
extern dbg_info_t *DbgInfo;
|
|
#endif // DBG
|
|
|
|
/* define the PCI device Table Cardname and id tables */
|
|
enum hermes_pci_versions {
|
|
CH_Agere_Systems_Mini_PCI_V1 = 0,
|
|
};
|
|
|
|
static struct pci_device_id wl_pci_tbl[] __devinitdata = {
|
|
{ WL_LKM_PCI_VENDOR_ID, WL_LKM_PCI_DEVICE_ID_0, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Agere_Systems_Mini_PCI_V1 },
|
|
{ WL_LKM_PCI_VENDOR_ID, WL_LKM_PCI_DEVICE_ID_1, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Agere_Systems_Mini_PCI_V1 },
|
|
{ WL_LKM_PCI_VENDOR_ID, WL_LKM_PCI_DEVICE_ID_2, PCI_ANY_ID, PCI_ANY_ID, 0, 0, CH_Agere_Systems_Mini_PCI_V1 },
|
|
{ } /* Terminating entry */
|
|
};
|
|
|
|
MODULE_DEVICE_TABLE(pci, wl_pci_tbl);
|
|
|
|
/*******************************************************************************
|
|
* function prototypes
|
|
******************************************************************************/
|
|
int __devinit wl_pci_probe( struct pci_dev *pdev,
|
|
const struct pci_device_id *ent );
|
|
void __devexit wl_pci_remove(struct pci_dev *pdev);
|
|
int wl_pci_setup( struct pci_dev *pdev );
|
|
void wl_pci_enable_cardbus_interrupts( struct pci_dev *pdev );
|
|
|
|
#ifdef ENABLE_DMA
|
|
int wl_pci_dma_alloc( struct pci_dev *pdev, struct wl_private *lp );
|
|
int wl_pci_dma_free( struct pci_dev *pdev, struct wl_private *lp );
|
|
int wl_pci_dma_alloc_tx_packet( struct pci_dev *pdev, struct wl_private *lp,
|
|
DESC_STRCT **desc );
|
|
int wl_pci_dma_free_tx_packet( struct pci_dev *pdev, struct wl_private *lp,
|
|
DESC_STRCT **desc );
|
|
int wl_pci_dma_alloc_rx_packet( struct pci_dev *pdev, struct wl_private *lp,
|
|
DESC_STRCT **desc );
|
|
int wl_pci_dma_free_rx_packet( struct pci_dev *pdev, struct wl_private *lp,
|
|
DESC_STRCT **desc );
|
|
int wl_pci_dma_alloc_desc_and_buf( struct pci_dev *pdev, struct wl_private *lp,
|
|
DESC_STRCT **desc, int size );
|
|
int wl_pci_dma_free_desc_and_buf( struct pci_dev *pdev, struct wl_private *lp,
|
|
DESC_STRCT **desc );
|
|
int wl_pci_dma_alloc_desc( struct pci_dev *pdev, struct wl_private *lp,
|
|
DESC_STRCT **desc );
|
|
int wl_pci_dma_free_desc( struct pci_dev *pdev, struct wl_private *lp,
|
|
DESC_STRCT **desc );
|
|
int wl_pci_dma_alloc_buf( struct pci_dev *pdev, struct wl_private *lp,
|
|
DESC_STRCT *desc, int size );
|
|
int wl_pci_dma_free_buf( struct pci_dev *pdev, struct wl_private *lp,
|
|
DESC_STRCT *desc );
|
|
|
|
void wl_pci_dma_hcf_reclaim_rx( struct wl_private *lp );
|
|
#endif // ENABLE_DMA
|
|
|
|
/*******************************************************************************
|
|
* PCI module function registration
|
|
******************************************************************************/
|
|
static struct pci_driver wl_driver =
|
|
{
|
|
name: MODULE_NAME,
|
|
id_table: wl_pci_tbl,
|
|
probe: wl_pci_probe,
|
|
remove: __devexit_p(wl_pci_remove),
|
|
suspend: NULL,
|
|
resume: NULL,
|
|
};
|
|
|
|
/*******************************************************************************
|
|
* wl_adapter_init_module()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Called by init_module() to perform PCI-specific driver initialization.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* N/A
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* 0
|
|
*
|
|
******************************************************************************/
|
|
int wl_adapter_init_module( void )
|
|
{
|
|
int result;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
DBG_FUNC( "wl_adapter_init_module()" );
|
|
DBG_ENTER( DbgInfo );
|
|
DBG_TRACE( DbgInfo, "wl_adapter_init_module() -- PCI\n" );
|
|
|
|
result = pci_register_driver( &wl_driver ); //;?replace with pci_module_init, Rubini pg 490
|
|
//;? why not do something with the result
|
|
|
|
DBG_LEAVE( DbgInfo );
|
|
return 0;
|
|
} // wl_adapter_init_module
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_adapter_cleanup_module()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Called by cleanup_module() to perform PCI-specific driver cleanup.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* N/A
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* N/A
|
|
*
|
|
******************************************************************************/
|
|
void wl_adapter_cleanup_module( void )
|
|
{
|
|
//;?how comes wl_adapter_cleanup_module is located in a seemingly pci specific module
|
|
DBG_FUNC( "wl_adapter_cleanup_module" );
|
|
DBG_ENTER( DbgInfo );
|
|
|
|
//;?DBG_TRACE below feels like nearly redundant in the light of DBG_ENTER above
|
|
DBG_TRACE( DbgInfo, "wl_adapter_cleanup_module() -- PCI\n" );
|
|
|
|
pci_unregister_driver( &wl_driver );
|
|
|
|
DBG_LEAVE( DbgInfo );
|
|
return;
|
|
} // wl_adapter_cleanup_module
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_adapter_insert()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Called by wl_pci_probe() to continue the process of device insertion.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* dev - a pointer to the device's net_device structure
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* TRUE or FALSE
|
|
*
|
|
******************************************************************************/
|
|
int wl_adapter_insert( struct net_device *dev )
|
|
{
|
|
int result = FALSE;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
DBG_FUNC( "wl_adapter_insert" );
|
|
DBG_ENTER( DbgInfo );
|
|
|
|
DBG_TRACE( DbgInfo, "wl_adapter_insert() -- PCI\n" );
|
|
|
|
if( dev == NULL ) {
|
|
DBG_ERROR( DbgInfo, "net_device pointer is NULL!!!\n" );
|
|
} else if( dev->priv == NULL ) {
|
|
DBG_ERROR( DbgInfo, "wl_private pointer is NULL!!!\n" );
|
|
} else if( wl_insert( dev ) ) { /* Perform remaining device initialization */
|
|
result = TRUE;
|
|
} else {
|
|
DBG_TRACE( DbgInfo, "wl_insert() FAILED\n" );
|
|
}
|
|
DBG_LEAVE( DbgInfo );
|
|
return result;
|
|
} // wl_adapter_insert
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_adapter_open()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Open the device.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* dev - a pointer to the device's net_device structure
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* an HCF status code
|
|
*
|
|
******************************************************************************/
|
|
int wl_adapter_open( struct net_device *dev )
|
|
{
|
|
int result = 0;
|
|
int hcf_status = HCF_SUCCESS;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
DBG_FUNC( "wl_adapter_open" );
|
|
DBG_ENTER( DbgInfo );
|
|
|
|
DBG_TRACE( DbgInfo, "wl_adapter_open() -- PCI\n" );
|
|
|
|
hcf_status = wl_open( dev );
|
|
|
|
if( hcf_status != HCF_SUCCESS ) {
|
|
result = -ENODEV;
|
|
}
|
|
|
|
DBG_LEAVE( DbgInfo );
|
|
return result;
|
|
} // wl_adapter_open
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_adapter_close()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Close the device
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* dev - a pointer to the device's net_device structure
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* 0
|
|
*
|
|
******************************************************************************/
|
|
int wl_adapter_close( struct net_device *dev )
|
|
{
|
|
DBG_FUNC( "wl_adapter_close" );
|
|
DBG_ENTER( DbgInfo );
|
|
|
|
DBG_TRACE( DbgInfo, "wl_adapter_close() -- PCI\n" );
|
|
DBG_TRACE( DbgInfo, "%s: Shutting down adapter.\n", dev->name );
|
|
|
|
wl_close( dev );
|
|
|
|
DBG_LEAVE( DbgInfo );
|
|
return 0;
|
|
} // wl_adapter_close
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_adapter_is_open()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Check whether this device is open. Returns
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* dev - a pointer to the device's net_device structure
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* nonzero if device is open.
|
|
*
|
|
******************************************************************************/
|
|
int wl_adapter_is_open( struct net_device *dev )
|
|
{
|
|
/* This function is used in PCMCIA to check the status of the 'open' field
|
|
in the dev_link_t structure associated with a network device. There
|
|
doesn't seem to be an analog to this for PCI, and checking the status
|
|
contained in the net_device structure doesn't have the same effect.
|
|
For now, return TRUE, but find out if this is necessary for PCI. */
|
|
|
|
return TRUE;
|
|
} // wl_adapter_is_open
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_pci_probe()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Registered in the pci_driver structure, this function is called when the
|
|
* PCI subsystem finds a new PCI device which matches the infomation contained
|
|
* in the pci_device_id table.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* pdev - a pointer to the device's pci_dev structure
|
|
* ent - this device's entry in the pci_device_id table
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* 0 on success
|
|
* errno value otherwise
|
|
*
|
|
******************************************************************************/
|
|
int __devinit wl_pci_probe( struct pci_dev *pdev,
|
|
const struct pci_device_id *ent )
|
|
{
|
|
int result;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
DBG_FUNC( "wl_pci_probe" );
|
|
DBG_ENTER( DbgInfo );
|
|
DBG_PRINT( "%s\n", VERSION_INFO );
|
|
|
|
result = wl_pci_setup( pdev );
|
|
|
|
DBG_LEAVE( DbgInfo );
|
|
|
|
return result;
|
|
} // wl_pci_probe
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_pci_remove()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Registered in the pci_driver structure, this function is called when the
|
|
* PCI subsystem detects that a PCI device which matches the infomation
|
|
* contained in the pci_device_id table has been removed.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* pdev - a pointer to the device's pci_dev structure
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* N/A
|
|
*
|
|
******************************************************************************/
|
|
void __devexit wl_pci_remove(struct pci_dev *pdev)
|
|
{
|
|
struct net_device *dev = NULL;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
DBG_FUNC( "wl_pci_remove" );
|
|
DBG_ENTER( DbgInfo );
|
|
|
|
/* Make sure the pci_dev pointer passed in is valid */
|
|
if( pdev == NULL ) {
|
|
DBG_ERROR( DbgInfo, "PCI subsys passed in an invalid pci_dev pointer\n" );
|
|
return;
|
|
}
|
|
|
|
dev = (struct net_device *)pci_get_drvdata( pdev );
|
|
if( dev == NULL ) {
|
|
DBG_ERROR( DbgInfo, "Could not retrieve net_device structure\n" );
|
|
return;
|
|
}
|
|
|
|
/* Perform device cleanup */
|
|
wl_remove( dev );
|
|
free_irq( dev->irq, dev );
|
|
|
|
#ifdef ENABLE_DMA
|
|
wl_pci_dma_free( pdev, (struct wl_private *)dev->priv );
|
|
#endif
|
|
|
|
wl_device_dealloc( dev );
|
|
|
|
DBG_LEAVE( DbgInfo );
|
|
return;
|
|
} // wl_pci_remove
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_pci_setup()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Called by wl_pci_probe() to begin a device's initialization process.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* pdev - a pointer to the device's pci_dev structure
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* 0 on success
|
|
* errno value otherwise
|
|
*
|
|
******************************************************************************/
|
|
int wl_pci_setup( struct pci_dev *pdev )
|
|
{
|
|
int result = 0;
|
|
struct net_device *dev = NULL;
|
|
struct wl_private *lp = NULL;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
DBG_FUNC( "wl_pci_setup" );
|
|
DBG_ENTER( DbgInfo );
|
|
|
|
/* Make sure the pci_dev pointer passed in is valid */
|
|
if( pdev == NULL ) {
|
|
DBG_ERROR( DbgInfo, "PCI subsys passed in an invalid pci_dev pointer\n" );
|
|
return -ENODEV;
|
|
}
|
|
|
|
result = pci_enable_device( pdev );
|
|
if( result != 0 ) {
|
|
DBG_ERROR( DbgInfo, "pci_enable_device() failed\n" );
|
|
DBG_LEAVE( DbgInfo );
|
|
return result;
|
|
}
|
|
|
|
/* We found our device! Let's register it with the system */
|
|
DBG_TRACE( DbgInfo, "Found our device, now registering\n" );
|
|
dev = wl_device_alloc( );
|
|
if( dev == NULL ) {
|
|
DBG_ERROR( DbgInfo, "Could not register device!!!\n" );
|
|
DBG_LEAVE( DbgInfo );
|
|
return -ENOMEM;
|
|
}
|
|
|
|
/* Make sure that space was allocated for our private adapter struct */
|
|
if( dev->priv == NULL ) {
|
|
DBG_ERROR( DbgInfo, "Private adapter struct was not allocated!!!\n" );
|
|
DBG_LEAVE( DbgInfo );
|
|
return -ENOMEM;
|
|
}
|
|
|
|
#ifdef ENABLE_DMA
|
|
/* Allocate DMA Descriptors */
|
|
if( wl_pci_dma_alloc( pdev, (struct wl_private *)dev->priv ) < 0 ) {
|
|
DBG_ERROR( DbgInfo, "Could not allocate DMA descriptor memory!!!\n" );
|
|
DBG_LEAVE( DbgInfo );
|
|
return -ENOMEM;
|
|
}
|
|
#endif
|
|
|
|
/* Register our private adapter structure with PCI */
|
|
pci_set_drvdata( pdev, dev );
|
|
|
|
/* Fill out bus specific information in the net_device struct */
|
|
dev->irq = pdev->irq;
|
|
SET_MODULE_OWNER( dev );
|
|
|
|
DBG_TRACE( DbgInfo, "Device Base Address: %#03lx\n", pdev->resource[0].start );
|
|
dev->base_addr = pdev->resource[0].start;
|
|
|
|
/* Initialize our device here */
|
|
if( !wl_adapter_insert( dev )) {
|
|
DBG_ERROR( DbgInfo, "wl_adapter_insert() FAILED!!!\n" );
|
|
wl_device_dealloc( dev );
|
|
DBG_LEAVE( DbgInfo );
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Register our ISR */
|
|
DBG_TRACE( DbgInfo, "Registering ISR...\n" );
|
|
|
|
result = request_irq(dev->irq, wl_isr, SA_SHIRQ, dev->name, dev);
|
|
if( result ) {
|
|
DBG_WARNING( DbgInfo, "Could not register ISR!!!\n" );
|
|
DBG_LEAVE( DbgInfo );
|
|
return result;
|
|
}
|
|
|
|
/* Make sure interrupts are enabled properly for CardBus */
|
|
lp = (struct wl_private *)dev->priv;
|
|
|
|
if( lp->hcfCtx.IFB_BusType == CFG_NIC_BUS_TYPE_CARDBUS ||
|
|
lp->hcfCtx.IFB_BusType == CFG_NIC_BUS_TYPE_PCI ) {
|
|
DBG_TRACE( DbgInfo, "This is a PCI/CardBus card, enable interrupts\n" );
|
|
wl_pci_enable_cardbus_interrupts( pdev );
|
|
}
|
|
|
|
/* Enable bus mastering */
|
|
pci_set_master( pdev );
|
|
|
|
DBG_LEAVE( DbgInfo );
|
|
return 0;
|
|
} // wl_pci_setup
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_pci_enable_cardbus_interrupts()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Called by wl_pci_setup() to enable interrupts on a CardBus device. This
|
|
* is done by writing bit 15 to the function event mask register. This
|
|
* CardBus-specific register is located in BAR2 (counting from BAR0), in memory
|
|
* space at byte offset 1f4 (7f4 for WARP).
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* pdev - a pointer to the device's pci_dev structure
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* N/A
|
|
*
|
|
******************************************************************************/
|
|
void wl_pci_enable_cardbus_interrupts( struct pci_dev *pdev )
|
|
{
|
|
u32 bar2_reg;
|
|
u32 mem_addr_bus;
|
|
u32 func_evt_mask_reg;
|
|
void *mem_addr_kern = NULL;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
DBG_FUNC( "wl_pci_enable_cardbus_interrupts" );
|
|
DBG_ENTER( DbgInfo );
|
|
|
|
/* Initialize to known bad values */
|
|
bar2_reg = 0xdeadbeef;
|
|
mem_addr_bus = 0xdeadbeef;
|
|
|
|
/* Read the BAR2 register; this register contains the base address of the
|
|
memory region where the function event mask register lives */
|
|
pci_read_config_dword( pdev, PCI_BASE_ADDRESS_2, &bar2_reg );
|
|
mem_addr_bus = bar2_reg & PCI_BASE_ADDRESS_MEM_MASK;
|
|
|
|
/* Once the base address is obtained, remap the memory region to kernel
|
|
space so we can retrieve the register */
|
|
mem_addr_kern = ioremap( mem_addr_bus, 0x200 );
|
|
|
|
#ifdef HERMES25
|
|
#define REG_OFFSET 0x07F4
|
|
#else
|
|
#define REG_OFFSET 0x01F4
|
|
#endif // HERMES25
|
|
|
|
#define BIT15 0x8000
|
|
|
|
/* Retrieve the functional event mask register, enable interrupts by
|
|
setting Bit 15, and write back the value */
|
|
func_evt_mask_reg = *(u32 *)( mem_addr_kern + REG_OFFSET );
|
|
func_evt_mask_reg |= BIT15;
|
|
*(u32 *)( mem_addr_kern + REG_OFFSET ) = func_evt_mask_reg;
|
|
|
|
/* Once complete, unmap the region and exit */
|
|
iounmap( mem_addr_kern );
|
|
|
|
DBG_LEAVE( DbgInfo );
|
|
return;
|
|
} // wl_pci_enable_cardbus_interrupts
|
|
/*============================================================================*/
|
|
|
|
#ifdef ENABLE_DMA
|
|
/*******************************************************************************
|
|
* wl_pci_dma_alloc()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Allocates all resources needed for PCI/CardBus DMA operation
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* pdev - a pointer to the device's pci_dev structure
|
|
* lp - the device's private adapter structure
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* 0 on success
|
|
* errno value otherwise
|
|
*
|
|
******************************************************************************/
|
|
int wl_pci_dma_alloc( struct pci_dev *pdev, struct wl_private *lp )
|
|
{
|
|
int i;
|
|
int status = 0;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
DBG_FUNC( "wl_pci_dma_alloc" );
|
|
DBG_ENTER( DbgInfo );
|
|
|
|
// lp->dma.tx_rsc_ind = lp->dma.rx_rsc_ind = 0;
|
|
//
|
|
// /* Alloc for the Tx chain and its reclaim descriptor */
|
|
// for( i = 0; i < NUM_TX_DESC; i++ ) {
|
|
// status = wl_pci_dma_alloc_tx_packet( pdev, lp, &lp->dma.tx_packet[i] );
|
|
// if( status == 0 ) {
|
|
// DBG_PRINT( "lp->dma.tx_packet[%d] : 0x%p\n", i, lp->dma.tx_packet[i] );
|
|
// DBG_PRINT( "lp->dma.tx_packet[%d]->next_desc_addr : 0x%p\n", i, lp->dma.tx_packet[i]->next_desc_addr );
|
|
// lp->dma.tx_rsc_ind++;
|
|
// } else {
|
|
// DBG_ERROR( DbgInfo, "Could not alloc DMA Tx Packet\n" );
|
|
// break;
|
|
// }
|
|
// }
|
|
// if( status == 0 ) {
|
|
// status = wl_pci_dma_alloc_desc( pdev, lp, &lp->dma.tx_reclaim_desc );
|
|
// DBG_PRINT( "lp->dma.tx_reclaim_desc: 0x%p\n", lp->dma.tx_reclaim_desc );
|
|
// }
|
|
// /* Alloc for the Rx chain and its reclaim descriptor */
|
|
// if( status == 0 ) {
|
|
// for( i = 0; i < NUM_RX_DESC; i++ ) {
|
|
// status = wl_pci_dma_alloc_rx_packet( pdev, lp, &lp->dma.rx_packet[i] );
|
|
// if( status == 0 ) {
|
|
// DBG_PRINT( "lp->dma.rx_packet[%d] : 0x%p\n", i, lp->dma.rx_packet[i] );
|
|
// DBG_PRINT( "lp->dma.rx_packet[%d]->next_desc_addr : 0x%p\n", i, lp->dma.rx_packet[i]->next_desc_addr );
|
|
// lp->dma.rx_rsc_ind++;
|
|
// } else {
|
|
// DBG_ERROR( DbgInfo, "Could not alloc DMA Rx Packet\n" );
|
|
// break;
|
|
// }
|
|
// }
|
|
// }
|
|
// if( status == 0 ) {
|
|
// status = wl_pci_dma_alloc_desc( pdev, lp, &lp->dma.rx_reclaim_desc );
|
|
// DBG_PRINT( "lp->dma.rx_reclaim_desc: 0x%p\n", lp->dma.rx_reclaim_desc );
|
|
// }
|
|
// /* Store status, as host should not call HCF functions if this fails */
|
|
// lp->dma.status = status; //;?all useages of dma.status have been commented out
|
|
// DBG_LEAVE( DbgInfo );
|
|
return status;
|
|
} // wl_pci_dma_alloc
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_pci_dma_free()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Deallocated all resources needed for PCI/CardBus DMA operation
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* pdev - a pointer to the device's pci_dev structure
|
|
* lp - the device's private adapter structure
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* 0 on success
|
|
* errno value otherwise
|
|
*
|
|
******************************************************************************/
|
|
int wl_pci_dma_free( struct pci_dev *pdev, struct wl_private *lp )
|
|
{
|
|
int i;
|
|
int status = 0;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
DBG_FUNC( "wl_pci_dma_free" );
|
|
DBG_ENTER( DbgInfo );
|
|
|
|
/* Reclaim all Rx packets that were handed over to the HCF */
|
|
/* Do I need to do this? Before this free is called, I've already disabled
|
|
the port which will call wl_pci_dma_hcf_reclaim */
|
|
//if( lp->dma.status == 0 )
|
|
//{
|
|
// wl_pci_dma_hcf_reclaim( lp );
|
|
//}
|
|
|
|
/* Free everything needed for DMA Rx */
|
|
for( i = 0; i < NUM_RX_DESC; i++ ) {
|
|
if( lp->dma.rx_packet[i] ) {
|
|
status = wl_pci_dma_free_rx_packet( pdev, lp, &lp->dma.rx_packet[i] );
|
|
if( status != 0 ) {
|
|
DBG_WARNING( DbgInfo, "Problem freeing Rx packet\n" );
|
|
}
|
|
}
|
|
}
|
|
lp->dma.rx_rsc_ind = 0;
|
|
|
|
if( lp->dma.rx_reclaim_desc ) {
|
|
status = wl_pci_dma_free_desc( pdev, lp, &lp->dma.rx_reclaim_desc );
|
|
if( status != 0 ) {
|
|
DBG_WARNING( DbgInfo, "Problem freeing Rx reclaim descriptor\n" );
|
|
}
|
|
}
|
|
|
|
/* Free everything needed for DMA Tx */
|
|
for( i = 0; i < NUM_TX_DESC; i++ ) {
|
|
if( lp->dma.tx_packet[i] ) {
|
|
status = wl_pci_dma_free_tx_packet( pdev, lp, &lp->dma.tx_packet[i] );
|
|
if( status != 0 ) {
|
|
DBG_WARNING( DbgInfo, "Problem freeing Tx packet\n" );
|
|
}
|
|
}
|
|
}
|
|
lp->dma.tx_rsc_ind = 0;
|
|
|
|
if( lp->dma.tx_reclaim_desc ) {
|
|
status = wl_pci_dma_free_desc( pdev, lp, &lp->dma.tx_reclaim_desc );
|
|
if( status != 0 ) {
|
|
DBG_WARNING( DbgInfo, "Problem freeing Tx reclaim descriptor\n" );
|
|
}
|
|
}
|
|
|
|
DBG_LEAVE( DbgInfo );
|
|
return status;
|
|
} // wl_pci_dma_free
|
|
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_pci_dma_alloc_tx_packet()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Allocates a single Tx packet, consisting of several descriptors and
|
|
* buffers. Data to transmit is first copied into the 'payload' buffer
|
|
* before being transmitted.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* pdev - a pointer to the device's pci_dev structure
|
|
* lp - the device's private adapter structure
|
|
* desc - a pointer which will reference the descriptor to be alloc'd.
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* 0 on success
|
|
* errno value otherwise
|
|
*
|
|
******************************************************************************/
|
|
int wl_pci_dma_alloc_tx_packet( struct pci_dev *pdev, struct wl_private *lp,
|
|
DESC_STRCT **desc )
|
|
{
|
|
// int status = 0;
|
|
// /*------------------------------------------------------------------------*/
|
|
//
|
|
// if( desc == NULL ) {
|
|
// status = -EFAULT;
|
|
// }
|
|
// if( status == 0 ) {
|
|
// status = wl_pci_dma_alloc_desc_and_buf( pdev, lp, desc,
|
|
// HCF_DMA_TX_BUF1_SIZE );
|
|
//
|
|
// if( status == 0 ) {
|
|
// status = wl_pci_dma_alloc_desc_and_buf( pdev, lp,
|
|
// &( (*desc)->next_desc_addr ),
|
|
// HCF_MAX_PACKET_SIZE );
|
|
// }
|
|
// }
|
|
// if( status == 0 ) {
|
|
// (*desc)->next_desc_phys_addr = (*desc)->next_desc_addr->desc_phys_addr;
|
|
// }
|
|
// return status;
|
|
} // wl_pci_dma_alloc_tx_packet
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_pci_dma_free_tx_packet()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Frees a single Tx packet, described in the corresponding alloc function.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* pdev - a pointer to the device's pci_dev structure
|
|
* lp - the device's private adapter structure
|
|
* desc - a pointer which will reference the descriptor to be alloc'd.
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* 0 on success
|
|
* errno value otherwise
|
|
*
|
|
******************************************************************************/
|
|
int wl_pci_dma_free_tx_packet( struct pci_dev *pdev, struct wl_private *lp,
|
|
DESC_STRCT **desc )
|
|
{
|
|
int status = 0;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
if( *desc == NULL ) {
|
|
DBG_PRINT( "Null descriptor\n" );
|
|
status = -EFAULT;
|
|
}
|
|
//;?the "limited" NDIS strategy, assuming a frame consists ALWAYS out of 2
|
|
//descriptors, make this robust
|
|
if( status == 0 && (*desc)->next_desc_addr ) {
|
|
status = wl_pci_dma_free_desc_and_buf( pdev, lp, &(*desc)->next_desc_addr );
|
|
}
|
|
if( status == 0 ) {
|
|
status = wl_pci_dma_free_desc_and_buf( pdev, lp, desc );
|
|
}
|
|
return status;
|
|
} // wl_pci_dma_free_tx_packet
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_pci_dma_alloc_rx_packet()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Allocates a single Rx packet, consisting of two descriptors and one
|
|
* contiguous buffer. THe buffer starts with the hermes-specific header.
|
|
* One descriptor points at the start, the other at offset 0x3a of the
|
|
* buffer.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* pdev - a pointer to the device's pci_dev structure
|
|
* lp - the device's private adapter structure
|
|
* desc - a pointer which will reference the descriptor to be alloc'd.
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* 0 on success
|
|
* errno value otherwise
|
|
*
|
|
******************************************************************************/
|
|
int wl_pci_dma_alloc_rx_packet( struct pci_dev *pdev, struct wl_private *lp,
|
|
DESC_STRCT **desc )
|
|
{
|
|
int status = 0;
|
|
DESC_STRCT *p;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
// if( desc == NULL ) {
|
|
// status = -EFAULT;
|
|
// }
|
|
// //;?the "limited" NDIS strategy, assuming a frame consists ALWAYS out of 2
|
|
// //descriptors, make this robust
|
|
// if( status == 0 ) {
|
|
// status = wl_pci_dma_alloc_desc( pdev, lp, desc );
|
|
// }
|
|
// if( status == 0 ) {
|
|
// status = wl_pci_dma_alloc_buf( pdev, lp, *desc, HCF_MAX_PACKET_SIZE );
|
|
// }
|
|
// if( status == 0 ) {
|
|
// status = wl_pci_dma_alloc_desc( pdev, lp, &p );
|
|
// }
|
|
// if( status == 0 ) {
|
|
// /* Size of 1st descriptor becomes 0x3a bytes */
|
|
// SET_BUF_SIZE( *desc, HCF_DMA_RX_BUF1_SIZE );
|
|
//
|
|
// /* Make 2nd descriptor point at offset 0x3a of the buffer */
|
|
// SET_BUF_SIZE( p, ( HCF_MAX_PACKET_SIZE - HCF_DMA_RX_BUF1_SIZE ));
|
|
// p->buf_addr = (*desc)->buf_addr + HCF_DMA_RX_BUF1_SIZE;
|
|
// p->buf_phys_addr = (*desc)->buf_phys_addr + HCF_DMA_RX_BUF1_SIZE;
|
|
// p->next_desc_addr = NULL;
|
|
//
|
|
// /* Chain 2nd descriptor to 1st descriptor */
|
|
// (*desc)->next_desc_addr = p;
|
|
// (*desc)->next_desc_phys_addr = p->desc_phys_addr;
|
|
// }
|
|
|
|
return status;
|
|
} // wl_pci_dma_alloc_rx_packet
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_pci_dma_free_rx_packet()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Frees a single Rx packet, described in the corresponding alloc function.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* pdev - a pointer to the device's pci_dev structure
|
|
* lp - the device's private adapter structure
|
|
* desc - a pointer which will reference the descriptor to be alloc'd.
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* 0 on success
|
|
* errno value otherwise
|
|
*
|
|
******************************************************************************/
|
|
int wl_pci_dma_free_rx_packet( struct pci_dev *pdev, struct wl_private *lp,
|
|
DESC_STRCT **desc )
|
|
{
|
|
int status = 0;
|
|
DESC_STRCT *p;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
if( *desc == NULL ) {
|
|
status = -EFAULT;
|
|
}
|
|
if( status == 0 ) {
|
|
p = (*desc)->next_desc_addr;
|
|
|
|
/* Free the 2nd descriptor */
|
|
if( p != NULL ) {
|
|
p->buf_addr = NULL;
|
|
p->buf_phys_addr = 0;
|
|
|
|
status = wl_pci_dma_free_desc( pdev, lp, &p );
|
|
}
|
|
}
|
|
|
|
/* Free the buffer and 1st descriptor */
|
|
if( status == 0 ) {
|
|
SET_BUF_SIZE( *desc, HCF_MAX_PACKET_SIZE );
|
|
status = wl_pci_dma_free_desc_and_buf( pdev, lp, desc );
|
|
}
|
|
return status;
|
|
} // wl_pci_dma_free_rx_packet
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_pci_dma_alloc_desc_and_buf()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Allocates a DMA descriptor and buffer, and associates them with one
|
|
* another.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* pdev - a pointer to the device's pci_dev structure
|
|
* lp - the device's private adapter structure
|
|
* desc - a pointer which will reference the descriptor to be alloc'd
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* 0 on success
|
|
* errno value otherwise
|
|
*
|
|
******************************************************************************/
|
|
int wl_pci_dma_alloc_desc_and_buf( struct pci_dev *pdev, struct wl_private *lp,
|
|
DESC_STRCT **desc, int size )
|
|
{
|
|
int status = 0;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
// if( desc == NULL ) {
|
|
// status = -EFAULT;
|
|
// }
|
|
// if( status == 0 ) {
|
|
// status = wl_pci_dma_alloc_desc( pdev, lp, desc );
|
|
//
|
|
// if( status == 0 ) {
|
|
// status = wl_pci_dma_alloc_buf( pdev, lp, *desc, size );
|
|
// }
|
|
// }
|
|
return status;
|
|
} // wl_pci_dma_alloc_desc_and_buf
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_pci_dma_free_desc_and_buf()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Frees a DMA descriptor and associated buffer.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* pdev - a pointer to the device's pci_dev structure
|
|
* lp - the device's private adapter structure
|
|
* desc - a pointer which will reference the descriptor to be alloc'd
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* 0 on success
|
|
* errno value otherwise
|
|
*
|
|
******************************************************************************/
|
|
int wl_pci_dma_free_desc_and_buf( struct pci_dev *pdev, struct wl_private *lp,
|
|
DESC_STRCT **desc )
|
|
{
|
|
int status = 0;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
if( desc == NULL ) {
|
|
status = -EFAULT;
|
|
}
|
|
if( status == 0 && *desc == NULL ) {
|
|
status = -EFAULT;
|
|
}
|
|
if( status == 0 ) {
|
|
status = wl_pci_dma_free_buf( pdev, lp, *desc );
|
|
|
|
if( status == 0 ) {
|
|
status = wl_pci_dma_free_desc( pdev, lp, desc );
|
|
}
|
|
}
|
|
return status;
|
|
} // wl_pci_dma_free_desc_and_buf
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_pci_dma_alloc_desc()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Allocates one DMA descriptor in cache coherent memory.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* pdev - a pointer to the device's pci_dev structure
|
|
* lp - the device's private adapter structure
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* 0 on success
|
|
* errno value otherwise
|
|
*
|
|
******************************************************************************/
|
|
int wl_pci_dma_alloc_desc( struct pci_dev *pdev, struct wl_private *lp,
|
|
DESC_STRCT **desc )
|
|
{
|
|
// int status = 0;
|
|
// dma_addr_t pa;
|
|
// /*------------------------------------------------------------------------*/
|
|
//
|
|
// DBG_FUNC( "wl_pci_dma_alloc_desc" );
|
|
// DBG_ENTER( DbgInfo );
|
|
//
|
|
// if( desc == NULL ) {
|
|
// status = -EFAULT;
|
|
// }
|
|
// if( status == 0 ) {
|
|
// *desc = pci_alloc_consistent( pdev, sizeof( DESC_STRCT ), &pa );
|
|
// }
|
|
// if( *desc == NULL ) {
|
|
// DBG_ERROR( DbgInfo, "pci_alloc_consistent() failed\n" );
|
|
// status = -ENOMEM;
|
|
// } else {
|
|
// memset( *desc, 0, sizeof( DESC_STRCT ));
|
|
// (*desc)->desc_phys_addr = cpu_to_le32( pa );
|
|
// }
|
|
// DBG_LEAVE( DbgInfo );
|
|
// return status;
|
|
} // wl_pci_dma_alloc_desc
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_pci_dma_free_desc()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Frees one DMA descriptor in cache coherent memory.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* pdev - a pointer to the device's pci_dev structure
|
|
* lp - the device's private adapter structure
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* 0 on success
|
|
* errno value otherwise
|
|
*
|
|
******************************************************************************/
|
|
int wl_pci_dma_free_desc( struct pci_dev *pdev, struct wl_private *lp,
|
|
DESC_STRCT **desc )
|
|
{
|
|
int status = 0;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
if( *desc == NULL ) {
|
|
status = -EFAULT;
|
|
}
|
|
if( status == 0 ) {
|
|
pci_free_consistent( pdev, sizeof( DESC_STRCT ), *desc,
|
|
(*desc)->desc_phys_addr );
|
|
}
|
|
*desc = NULL;
|
|
return status;
|
|
} // wl_pci_dma_free_desc
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_pci_dma_alloc_buf()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Allocates one DMA buffer in cache coherent memory, and associates a DMA
|
|
* descriptor with this buffer.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* pdev - a pointer to the device's pci_dev structure
|
|
* lp - the device's private adapter structure
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* 0 on success
|
|
* errno value otherwise
|
|
*
|
|
******************************************************************************/
|
|
int wl_pci_dma_alloc_buf( struct pci_dev *pdev, struct wl_private *lp,
|
|
DESC_STRCT *desc, int size )
|
|
{
|
|
int status = 0;
|
|
dma_addr_t pa;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
// DBG_FUNC( "wl_pci_dma_alloc_buf" );
|
|
// DBG_ENTER( DbgInfo );
|
|
//
|
|
// if( desc == NULL ) {
|
|
// status = -EFAULT;
|
|
// }
|
|
// if( status == 0 && desc->buf_addr != NULL ) {
|
|
// status = -EFAULT;
|
|
// }
|
|
// if( status == 0 ) {
|
|
// desc->buf_addr = pci_alloc_consistent( pdev, size, &pa );
|
|
// }
|
|
// if( desc->buf_addr == NULL ) {
|
|
// DBG_ERROR( DbgInfo, "pci_alloc_consistent() failed\n" );
|
|
// status = -ENOMEM;
|
|
// } else {
|
|
// desc->buf_phys_addr = cpu_to_le32( pa );
|
|
// SET_BUF_SIZE( desc, size );
|
|
// }
|
|
// DBG_LEAVE( DbgInfo );
|
|
return status;
|
|
} // wl_pci_dma_alloc_buf
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_pci_dma_free_buf()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Allocates one DMA buffer in cache coherent memory, and associates a DMA
|
|
* descriptor with this buffer.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* pdev - a pointer to the device's pci_dev structure
|
|
* lp - the device's private adapter structure
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* 0 on success
|
|
* errno value otherwise
|
|
*
|
|
******************************************************************************/
|
|
int wl_pci_dma_free_buf( struct pci_dev *pdev, struct wl_private *lp,
|
|
DESC_STRCT *desc )
|
|
{
|
|
int status = 0;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
if( desc == NULL ) {
|
|
status = -EFAULT;
|
|
}
|
|
if( status == 0 && desc->buf_addr == NULL ) {
|
|
status = -EFAULT;
|
|
}
|
|
if( status == 0 ) {
|
|
pci_free_consistent( pdev, GET_BUF_SIZE( desc ), desc->buf_addr,
|
|
desc->buf_phys_addr );
|
|
|
|
desc->buf_addr = 0;
|
|
desc->buf_phys_addr = 0;
|
|
SET_BUF_SIZE( desc, 0 );
|
|
}
|
|
return status;
|
|
} // wl_pci_dma_free_buf
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_pci_dma_hcf_supply()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Supply HCF with DMA-related resources. These consist of:
|
|
* - buffers and descriptors for receive purposes
|
|
* - one 'reclaim' descriptor for the transmit path, used to fulfill a
|
|
* certain H25 DMA engine requirement
|
|
* - one 'reclaim' descriptor for the receive path, used to fulfill a
|
|
* certain H25 DMA engine requirement
|
|
*
|
|
* This function is called at start-of-day or at re-initialization.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* lp - the device's private adapter structure
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* 0 on success
|
|
* errno value otherwise
|
|
*
|
|
******************************************************************************/
|
|
void wl_pci_dma_hcf_supply( struct wl_private *lp )
|
|
{
|
|
int i;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
DBG_FUNC( "wl_pci_dma_hcf_supply" );
|
|
DBG_ENTER( DbgInfo );
|
|
|
|
//if( lp->dma.status == 0 );
|
|
//{
|
|
/* Hand over the Rx/Tx reclaim descriptors to the HCF */
|
|
if( lp->dma.tx_reclaim_desc ) {
|
|
DBG_PRINT( "lp->dma.tx_reclaim_desc: 0x%p\n", lp->dma.tx_reclaim_desc );
|
|
hcf_dma_tx_put( &lp->hcfCtx, lp->dma.tx_reclaim_desc, 0 );
|
|
lp->dma.tx_reclaim_desc = NULL;
|
|
DBG_PRINT( "lp->dma.tx_reclaim_desc: 0x%p\n", lp->dma.tx_reclaim_desc );
|
|
}
|
|
if( lp->dma.rx_reclaim_desc ) {
|
|
DBG_PRINT( "lp->dma.rx_reclaim_desc: 0x%p\n", lp->dma.rx_reclaim_desc );
|
|
hcf_dma_rx_put( &lp->hcfCtx, lp->dma.rx_reclaim_desc );
|
|
lp->dma.rx_reclaim_desc = NULL;
|
|
DBG_PRINT( "lp->dma.rx_reclaim_desc: 0x%p\n", lp->dma.rx_reclaim_desc );
|
|
}
|
|
/* Hand over the Rx descriptor chain to the HCF */
|
|
for( i = 0; i < NUM_RX_DESC; i++ ) {
|
|
DBG_PRINT( "lp->dma.rx_packet[%d]: 0x%p\n", i, lp->dma.rx_packet[i] );
|
|
hcf_dma_rx_put( &lp->hcfCtx, lp->dma.rx_packet[i] );
|
|
lp->dma.rx_packet[i] = NULL;
|
|
DBG_PRINT( "lp->dma.rx_packet[%d]: 0x%p\n", i, lp->dma.rx_packet[i] );
|
|
}
|
|
//}
|
|
|
|
DBG_LEAVE( DbgInfo );
|
|
return;
|
|
} // wl_pci_dma_hcf_supply
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_pci_dma_hcf_reclaim()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Return DMA-related resources from the HCF. These consist of:
|
|
* - buffers and descriptors for receive purposes
|
|
* - buffers and descriptors for transmit purposes
|
|
* - one 'reclaim' descriptor for the transmit path, used to fulfill a
|
|
* certain H25 DMA engine requirement
|
|
* - one 'reclaim' descriptor for the receive path, used to fulfill a
|
|
* certain H25 DMA engine requirement
|
|
*
|
|
* This function is called at end-of-day or at re-initialization.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* lp - the device's private adapter structure
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* 0 on success
|
|
* errno value otherwise
|
|
*
|
|
******************************************************************************/
|
|
void wl_pci_dma_hcf_reclaim( struct wl_private *lp )
|
|
{
|
|
int i;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
DBG_FUNC( "wl_pci_dma_hcf_reclaim" );
|
|
DBG_ENTER( DbgInfo );
|
|
|
|
wl_pci_dma_hcf_reclaim_rx( lp );
|
|
for( i = 0; i < NUM_RX_DESC; i++ ) {
|
|
DBG_PRINT( "rx_packet[%d] 0x%p\n", i, lp->dma.rx_packet[i] );
|
|
// if( lp->dma.rx_packet[i] == NULL ) {
|
|
// DBG_PRINT( "wl_pci_dma_hcf_reclaim: rx_packet[%d] NULL\n", i );
|
|
// }
|
|
}
|
|
|
|
wl_pci_dma_hcf_reclaim_tx( lp );
|
|
for( i = 0; i < NUM_TX_DESC; i++ ) {
|
|
DBG_PRINT( "tx_packet[%d] 0x%p\n", i, lp->dma.tx_packet[i] );
|
|
// if( lp->dma.tx_packet[i] == NULL ) {
|
|
// DBG_PRINT( "wl_pci_dma_hcf_reclaim: tx_packet[%d] NULL\n", i );
|
|
// }
|
|
}
|
|
|
|
DBG_LEAVE( DbgInfo );
|
|
return;
|
|
} // wl_pci_dma_hcf_reclaim
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_pci_dma_hcf_reclaim_rx()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Reclaim Rx packets that have already been processed by the HCF.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* lp - the device's private adapter structure
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* 0 on success
|
|
* errno value otherwise
|
|
*
|
|
******************************************************************************/
|
|
void wl_pci_dma_hcf_reclaim_rx( struct wl_private *lp )
|
|
{
|
|
int i;
|
|
DESC_STRCT *p;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
DBG_FUNC( "wl_pci_dma_hcf_reclaim_rx" );
|
|
DBG_ENTER( DbgInfo );
|
|
|
|
//if( lp->dma.status == 0 )
|
|
//{
|
|
while ( ( p = hcf_dma_rx_get( &lp->hcfCtx ) ) != NULL ) {
|
|
if( p && p->buf_addr == NULL ) {
|
|
/* A reclaim descriptor is being given back by the HCF. Reclaim
|
|
descriptors have a NULL buf_addr */
|
|
lp->dma.rx_reclaim_desc = p;
|
|
DBG_PRINT( "reclaim_descriptor: 0x%p\n", p );
|
|
continue;
|
|
}
|
|
for( i = 0; i < NUM_RX_DESC; i++ ) {
|
|
if( lp->dma.rx_packet[i] == NULL ) {
|
|
break;
|
|
}
|
|
}
|
|
/* An Rx buffer descriptor is being given back by the HCF */
|
|
lp->dma.rx_packet[i] = p;
|
|
lp->dma.rx_rsc_ind++;
|
|
DBG_PRINT( "rx_packet[%d] 0x%p\n", i, lp->dma.rx_packet[i] );
|
|
}
|
|
//}
|
|
DBG_LEAVE( DbgInfo );
|
|
} // wl_pci_dma_hcf_reclaim_rx
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_pci_dma_get_tx_packet()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Obtains a Tx descriptor from the chain to use for Tx.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* lp - a pointer to the device's wl_private structure.
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* A pointer to the retrieved descriptor
|
|
*
|
|
******************************************************************************/
|
|
DESC_STRCT * wl_pci_dma_get_tx_packet( struct wl_private *lp )
|
|
{
|
|
int i;
|
|
DESC_STRCT *desc = NULL;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
for( i = 0; i < NUM_TX_DESC; i++ ) {
|
|
if( lp->dma.tx_packet[i] ) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if( i != NUM_TX_DESC ) {
|
|
desc = lp->dma.tx_packet[i];
|
|
|
|
lp->dma.tx_packet[i] = NULL;
|
|
lp->dma.tx_rsc_ind--;
|
|
|
|
memset( desc->buf_addr, 0, HCF_DMA_TX_BUF1_SIZE );
|
|
}
|
|
|
|
return desc;
|
|
} // wl_pci_dma_get_tx_packet
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_pci_dma_put_tx_packet()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Returns a Tx descriptor to the chain.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* lp - a pointer to the device's wl_private structure.
|
|
* desc - a pointer to the descriptor to return.
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* N/A
|
|
*
|
|
******************************************************************************/
|
|
void wl_pci_dma_put_tx_packet( struct wl_private *lp, DESC_STRCT *desc )
|
|
{
|
|
int i;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
for( i = 0; i < NUM_TX_DESC; i++ ) {
|
|
if( lp->dma.tx_packet[i] == NULL ) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if( i != NUM_TX_DESC ) {
|
|
lp->dma.tx_packet[i] = desc;
|
|
lp->dma.tx_rsc_ind++;
|
|
}
|
|
} // wl_pci_dma_put_tx_packet
|
|
/*============================================================================*/
|
|
|
|
/*******************************************************************************
|
|
* wl_pci_dma_hcf_reclaim_tx()
|
|
*******************************************************************************
|
|
*
|
|
* DESCRIPTION:
|
|
*
|
|
* Reclaim Tx packets that have either been processed by the HCF due to a
|
|
* port disable or a Tx completion.
|
|
*
|
|
* PARAMETERS:
|
|
*
|
|
* lp - the device's private adapter structure
|
|
*
|
|
* RETURNS:
|
|
*
|
|
* 0 on success
|
|
* errno value otherwise
|
|
*
|
|
******************************************************************************/
|
|
void wl_pci_dma_hcf_reclaim_tx( struct wl_private *lp )
|
|
{
|
|
int i;
|
|
DESC_STRCT *p;
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
DBG_FUNC( "wl_pci_dma_hcf_reclaim_tx" );
|
|
DBG_ENTER( DbgInfo );
|
|
|
|
//if( lp->dma.status == 0 )
|
|
//{
|
|
while ( ( p = hcf_dma_tx_get( &lp->hcfCtx ) ) != NULL ) {
|
|
|
|
if( p != NULL && p->buf_addr == NULL ) {
|
|
/* A Reclaim descriptor is being given back by the HCF. Reclaim
|
|
descriptors have a NULL buf_addr */
|
|
lp->dma.tx_reclaim_desc = p;
|
|
DBG_PRINT( "reclaim_descriptor: 0x%p\n", p );
|
|
continue;
|
|
}
|
|
for( i = 0; i < NUM_TX_DESC; i++ ) {
|
|
if( lp->dma.tx_packet[i] == NULL ) {
|
|
break;
|
|
}
|
|
}
|
|
/* An Rx buffer descriptor is being given back by the HCF */
|
|
lp->dma.tx_packet[i] = p;
|
|
lp->dma.tx_rsc_ind++;
|
|
DBG_PRINT( "tx_packet[%d] 0x%p\n", i, lp->dma.tx_packet[i] );
|
|
}
|
|
//}
|
|
|
|
if( lp->netif_queue_on == FALSE ) {
|
|
netif_wake_queue( lp->dev );
|
|
WL_WDS_NETIF_WAKE_QUEUE( lp );
|
|
lp->netif_queue_on = TRUE;
|
|
}
|
|
DBG_LEAVE( DbgInfo );
|
|
return;
|
|
} // wl_pci_dma_hcf_reclaim_tx
|
|
/*============================================================================*/
|
|
#endif // ENABLE_DMA
|